Carrie Hope Fletcher is an actress, singer and vlogger. Carrie has starred in a number of shows on London's West End and on national theatre tours, including Les Misérables, The Addams Family, Heathers, Andrew Lloyd Webber's Cinderella and more. She has written several bestselling books for adults and children.

Carrie lives just outside of London with her husband, Joel, Edgar the tuxedo cat and many fictional friends that she keeps on her bookshelves, just in case she wants an adventure.

What do you get if you mix together two best friends, a witch's curse and a haunted house? A spell-binding mystery for fans of The Worst Witch and The Danger Gang from acclaimed performer and bestselling author Carrie Hope Fletcher!

Ivy and Maggie have been best friends ever since they were born at exactly the same minute on Friday 13th - twelve years ago. They're always on the lookout for their next adventure, and, when strange and mysterious things start to happen in Crowood Peak, it's up to them to work out what's going on.

All the evidence points to the old house next door with purple smoke coming out of the chimney, and a new owner who looks suspiciously like a witch!

Can Ivy and Maggie solve the mystery of Hokum House, or will this adventure spell more mischief than even the Double Trouble Society can manage?

With gorgeous chapter illustrations from Davide Ortu, this is a witchy mystery you don't want to miss this Halloween!